Characterisation of two citrus apscaviroids isolated in Spain

Characterisation of two citrus apscaviroids isolated in Spain Sequence variability in the PCR amplified cDNAs from two citrus apscaviroid isolates CVd-Ia and CVd-IIId from Spain, was analysed. CVd-IIId sequence was shown to be identical to previously described CVd-III sequences and no important variability was encountered within the viroid population. Conversely, CVd-Ia displayed population heterogeneity as shown by SSCP analysis, Sal I restriction site polymorphism and sequences of 27 CVd-Ia cloned DNAs. The CVd-Ia genomic heterogeneity is characterised by two major subpopulations with the most divergent sequences, and by the presence of individual variants, making a sequence continuum between the two major groups. Most sequence variations are clustered in the left part of the viroid molecule. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Characterisation of two citrus apscaviroids isolated in Spain

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Publisher
Springer-Verlag
Copyright
Copyright © Wien by 2000 Springer-Verlag/
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050070070
Publisher site
See Article on Publisher Site

Abstract

Sequence variability in the PCR amplified cDNAs from two citrus apscaviroid isolates CVd-Ia and CVd-IIId from Spain, was analysed. CVd-IIId sequence was shown to be identical to previously described CVd-III sequences and no important variability was encountered within the viroid population. Conversely, CVd-Ia displayed population heterogeneity as shown by SSCP analysis, Sal I restriction site polymorphism and sequences of 27 CVd-Ia cloned DNAs. The CVd-Ia genomic heterogeneity is characterised by two major subpopulations with the most divergent sequences, and by the presence of individual variants, making a sequence continuum between the two major groups. Most sequence variations are clustered in the left part of the viroid molecule.

Journal

Archives of VirologySpringer Journals

Published: Sep 1, 2000

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